/**
 * Created by minigci.he on 16/10/31.
 */
console.log('-------------------')
console.log('test9')

console.log([1,2,3].includes(3,3))      // false
console.log([1,2,3].includes(3, -1))    // true
console.log([1,2,3].includes(1, 1))     // false